模拟一下即可

#include<bits/stdc++.h>
using namespace std;
int main(){
    string a,b; getline(cin,a); getline(cin,b);
    if(a.size() != b.size()){
        if(a.size() > b.size()){
            cout << ">";
            return 0;
        }else{
            cout << "<";
            return 0;
        }
    }
    for(int i = 0;i < a.size();i++){
        if(a[i] >= 'A' && a[i] <= 'Z') a[i] += 32;
    }
    for(int i = 0;i < b.size();i++){
        if(b[i] >= 'A' && b[i] <= 'Z') b[i] += 32;
    }
    for(int i = 0;i < a.size();i++){
        if(a[i] > b[i]){
            cout << ">";
            return 0;
        }else if(a[i] < b[i]){
            cout << "<";
            return 0;
        }
    }
    cout << "=";
    return 0;
}